Power-press



y UNITED- STATES;

PATENT Crmes.

ALANSON H. MERRIMAN, OF MRIDEN, CONNECTICUT.

POWER-PRESS.

SPECIFICATION 'forming part of Letters Patent No. 316,989, dated May 5, 1885.

Application filed January 29, 1885. (No model.)

MAN, a citizen of the United States, residing at Meriden, in the county of New Haven and State of Connecticut, have invented certain Improvements in Power-Presses, of which the following is a specication.

My improvements relate to the mechanism for connecting and disconnecting the drivingwheel with the press-shaft.

In the accompanying drawings, Figure I is a side elevation, partly in vertical section on line x x of Fig. 2, of so much of a power-press as is necessary to illustrate my improvement. Fig. 2 is a vertical section of the same, partly in elevation, the plane of section being indicated by line y y ofFig. 1; and Fig. 3 is aside elevation of that side of the wheel which faces the press-frame, together with a transverse section ofthe press-shaft.

A designates a portion of the frame of a press, and B the main shaft, which is supported by said frame in any suitable bearings. This shaft is provided with an enlarged `portion in the form ofa collar, a, and by the side of this collar the driving-wheel C is mounted loosely upon said shaft. For convenience Ihave only illustrated the hub of this wheel.

A strike pin or dog, b, is firmly secured to the press-shaft in any proper manner, but preferably by a screw-thread, as shown. Ihe side of the wheel-hub C is provided with a recess, c, which covers the strike pin or dog b.

At one side of the recess c, I form a radial groove in the hub of the wheel, within which I place the sliding clutch-bolt D. rIhis bolt is held in place by means of a cap, d, and is provided with suitable stops for limiting the range of itslongitudinal movementas,for instance, the stop-pinf, which lies w ithin a slot in the capplate d. I also provide some friction device to prevent an accidental movement of the clutchbolt D--as, for instance, a spiral spring, g, Fig. 2-one end of which bears continually against one side of the clutch-bolt. In the outer end of the clutch-bolt I form a transverse-slot, (shown most at h, Fig. 3,) the side walls 'o f which slot form two opposing shoulders.

Upon the frame of the press I arrange a sliding shipper, E, which may be supported so as to slide radially to and from the wheelhub. As illustrated,this movementis vertical. This shipper maybe guidedin itslongitudinal movement by any suitable ways or guides, and is designed to be forced in one directionas, for instance, downward-by means of a suitable spring, and in the opposite direction by means of a treadle, which it is deemed unnecessary to illustrate.

Upon the upper end ofthe sliding shipper, Vand projecting sidewise toward the path of the clutch-pin, is a cross-arm, k, the upper side of which is straight and square across, and the under side ot' which is beveled in opposite directions, as shown in Fig. l. The height of this cross-arm at its deepest place is suoli as will just about ill the transverse slot in the clutch-bolt.

When the driVing-wheeland press-shaft are disconnected, the clutch-bolt will be held outward, as illustrated by the broken lines at the right of Fig. I, and the slidingshipper will be held downward with its cross-arm in the position indicated by the broken linesin said iigure. Vhen in this position,the driving-wheel may revolve continuously without changing the position of the clutch-bolt. By throwing the shipper-slide upwardinto the position indicated by full lines in Fig. 1,the inner wall of the slot in the clutch-bolt, moving in the path indicated by the broken line n, will engage with the upper face of the cross-arm k, and force the clutch-pin from the position indicated by broken lines into that indicated by full lines in Fig. l, so that the inner end of the clutch-bolt will engage the strike pin or dog b, andthereby necessitate the movement of the press-shaft with the driving-wheel so long as the sliding shipper remains elevated. When the sliding shipper is brought downward again, the outer wall of the slot through the clutch-bolt l), moving in the path indicated by the broken lines m, will engage the under side of the cross-arm 7c, and thereby withdraw the clutch-bolt from engagement with the strike pin or dog.

It should be noticed that by making a bevel upon each side ofthe cross-arm 7c the clutchbolt is operated the same when the drivingwheel is moved in either direct-ion.

I claim as my inventionl. In a power-press, the driving-wheel hav- ICO ing the clutch-bolt D fitted to move radially Within its hub, substantially as described, and and the sliding` shipper having a straight and for the purpose speciied. p en inclined face for acting upon the opposing 1o 2. The combination ofthe pressshaft havshoulders of the clutch-bolt, substantially as ing the strike pin or dog b, the driving-Wheel described, and for the purpose specified.

5 C, loosely mounted upon said shaft, the clutch- ALANSON H. MERRIMAN.

bolt D tted to move radially Within the hub Vitncsses: of said Wheel7 and having at its outer end two GEORGE A. FAY, opposing shoulders, as the walls of the slot h, CHARLES H. SAWYER. 

